Objective Questions on Engineering Materials

Objective Questions on Engineering Materials

1-The cross-section of the specimen in tension test is

(A) Circular

(B) Square

(C) Rectangular

(D) Any of the above

 

2-In a tension test, the specimen is subjected to

(A) Axial tension force

(B) Radial tension force

(C) Axial compression force

(D) Radial compression force

 

3-The stress of a tensile specimen can be calculated by

(A) Tensile force / Original cross section area

(B) Tensile force / Change in cross section area

(C) Original cross section area / Tensile force

(D) Change in cross section area / Tensile force

 

4- The strain of a tensile specimen can be calculated by

(A) Deformation / Total length

(B) Deformation / Change in length

(C) Deformation / Gauge length

(D) None of the above

 

5-Stress-Strain relationship is linear up to

(A) Elastic limit

(B) Yield strength

(C) Proportional limit

(D) None of the above

 

6-The term ___ is defined as the stress at which the stress-strain curve begins to deviate from the straight line.

(A) Elastic limit

(B) Yield strength

(C) Proportional limit

(D) None of the above

 

7-Modulus of elasticity = stress / strain =

(A) Sinθ

(B) Cosθ

(C) Cotθ

(D) Tanθ

 

8-The ___ of the material is defined as the maximum stress without any permanent deformation.

(A) Proportional limit

(B) Elastic limit

(C) Yield strength

(D) Ultimate tensile strength

 

9-The ___ is defined as the maximum stress at which a marked increase in elongation occurs without increase in the load.

(A) Proportional limit

(B) Elastic limit

(C) Yield strength

(D) Ultimate tensile strength

 

10-The ___ is the maximum stress that can be reached in the tension test.

(A) Proportional limit

(B) Elastic limit

(C) Yield strength

(D) Ultimate tensile strength

 

ANSWERS:

1-(D), 2-(A), 3-(A), 4-(C), 5-(C), 6-(C), 7-(D), 8-(B), 9-(C), 10-(D)